Pump gun



April 12, 1932. JA J, HENRY 1,853,862

PUMP GUN Filed June 5, 1931 4 Sheets-Sheet l 4April 12, 1932. 1. J.HENRY PUMP GUN Filed June 5, 1931 4 Sheets-Sheet- 3 QN um @i A\\ v .a.ma n M QM S1 w www,

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PUMP GUN Filed June 3, 1931 4 Sheets-Sheet 4 Patented Apr. 12, 1932 tsarFATF??? 'FFQE JOHN J. HENRY, OF MASON, ILLINOIS, ASSIGNOR OF ONE-HALF'.I'O HARRY H. OCONNELL, OF EFFINGHAM, ILLINOIS PUMP GUN Applicationfiled .Tune 3,

The device forming the subject matter of this application is a pump gun,and one object of the invention is to provide novel means for eject-ingthe shell downwardly.

Other objects are, to provide novel means for locking the barrel infiring position, and to improve the firing and the safety mechanisms.

It is within the province of the disclosure to improve generally and toenhance the utility of devices of that type to which the 1nventionappertains.

With the above and other objects in View, which will appear as thedescription proceeds, the invention resides in the combination andarrangement of parts and in the details 0f construction hereinafterdescribed and claimed, it being understood that changes in the preciseembodiment of the invention herein disclosed, may be made within thescope of what is claimed, without departing from the spirit of theinvention.

In the drawings Figure 1 shows in longitudinal section, a deviceconstructed in accordance with the invention, the gun being opened, andready to have a shell discharged from the magazine;

Figure 2 is a section resembling Figure 1 but in a slightly differentcutting plane;

Figure 3 is a longitudinal section showing the gun closed;

Figure 4 is a longitudinal section in a plane at right angles to thecutting' plane of Figure 1;

Figures 5, 6, 7, 8, 9, 10, 11, 12 and 13 are transverse sections takenrespectively, on the lines 5-5, 6-G, 7 7, 8 8, 9-9, 10-10, 11-11, 12-12and 13-13 of Figure 1;

Figure 14 is a longitudinal section showing the parts as they willappear shortly before they have assumed the positions of Figure 3;

Figure 15 is a fragm-ental longitudinal section at right angles to thecutting plane in Figures 1, 2, 3 and 14, and showing the shellgrippinglevers;

Figure 16 is a side view of the slides that move with the forearm;

Figure 17 is a plan of the structure shown in Figure 16;

Figure 18 is a perspective view supplemen- 1931. Serial No. 541,922.

tal to Figure 6 and disclosing one of the 1evers of the action lock;

Figure 19 is an eleva-tion showing another lever of the action lock ofFigure 6;

Figure 20 is cross section of the structure shown in Figure 19.

Figure 21 isv aside elevation showing a portion of the barrelV and themagazine;

Figure 22 is a cross section of the structure delineated in Figure 21.

The frame of the gun in marked generally by the numeral 1, and in theforward part of the frame (Figs. 9, 10, and 2) a block 2 is held bytake-down screws 3 which also retain the magazine 4. A barrel 5 hassliding movement, lengthwise, in the frame 1 and on the block 2 (Fig.10).' A longitudinal rib 6 (Figs. 11, 9 and 14) on the barrel 5 slidesin a groove 7 in the forward part of frame 1 and constrains the barrel 5to straight line movement in the frame 1. The barrel 5 (Figs. 21 and 22)has an inverted T-shaped part'103 that slides in a correspondinglyshaped groove in a. rib 104 on the magazine 4, the barrel carrying astop 105, adapted to cooperate with the rear end of the rib 104.

The forearm 8 slides on the magazine 4 and on the barrel 5 and isconnected by securing elements' 92 (Figs. 12, 1, 14, 3, 2) with a ring 9(Figs. 12, 16, and 17) slidable on the magazine 4 and carryingrearwardly extended slides 11 which reciprocate in guide grooves 111 inthe frame 1.

Figure 13, in conjunction with Figures 2, 1, and 14, shows that thebarrel 5 has a cross piece 12, slidable inl slots 14 in the forearm 8.Latches'l (Figs. 17, 1,14,l1,2 and 3) are pivoted to the inner sides ofthe slides 11, and are spring-pressech'to swing upwardly and to engagein front of a projection 16 (Figs. 11 and 1) on the lower side of thebarrel 5. In Figures 14 and 3 it appears that the block 2, which may beconsidered as part of the frame of the gun, has a cam 17 wherewith thelatches 15 engage as the slides 11 are moved backwardly, along with theforearm 8.

A locking plate for the barrel 5 (Figs. 9 and 1) slidesl crosswise ofthe barrel 5, in the block 2, and when the barrel 5 is shoved back tothe shooting position of Figure 3, the up- :saY

per edge of the locking plate is' engaged in a seat 19 in the barrel 5,to be seen plainly in Figures 2 and 3. Figures 9, 2 and 3 show that thelocking plate 18 has lugs 20 on its outer edges, which, when the slides11 are moved rearwardly to the positions of Figures 14 and 3, areadapted to cooperate with rearwardly and downwardly inclined cam notches21 (Figure 16) formed in the slides 11, near to the forward endsthereof.

A breech block 22 (Figures 14, 1, 6, 5, 2, 3, and 4) is secured in theframe 1. In the breech block 22 and in the block 2, below the slides 11(Figures 8 and 3), longitudinal shafts 23 are journaled, these shaftscarrying radial shell-supporting wings 24 (Figures 7 4 and 2). Below thewings 24, the frame of the gun is open, as denoted by the numeral 25 inFigures 7, 2, 3 and 1. Short spiral ribs 26 (Figures 14,3 and 2) aresecured to the shafts 3 near to the forward ends thereof. Sometimesthese ribs 26 lie between the slides 11 of Figure 17 behind cam blocks29 on the arms, and sometimes they are outside of the arms 11, and thenthey slide in longitudinal grooves 27 (Figures 1'6, 14, 10 and 2) fashioned in the outer surfaces of the slides 11 at the lower edge thereof.In the lower edge of the slides 11, at the back end of the groove 27,there are inclined cam notches 28 (Figures 17, 16, 14 and 2), the camnotches being located a little behind the cam blocks 29, and cooperatingwith the spiral ribs 26 of Jthe shafts 23 to raise andV lower the wings24 (Figures 7 shafts 23. The forward end of a spring tongue 30 (Figures13 and 8) is secured in a groove 100 that isformed in the top of theframe 1, and when the barrel 5 is pushed back into the position ofFigures 3 and 14, the spring 30 retires into the groove 100. The spring30 is a shell-ejecting spring.

Shell-gripping levers 31 (Figures 15 and 4) are fulcrumed intermediatetheir ends on the frame 1 at the rear of the magazine 4, and the forwardends of the levers are pressed inwardly by springs 32. It is shown inFigure 1, that the rear ends of the levers 31 extend upwardly, andFigure 8 shows that the ends of the levers extend outwardly, so as tocooperate with the inter-surfaces of the slides 11. The rear, upper endof one lever is adapted to be received in a depression 34 in one of thearms 11, and the rear end of the other lever is adapted to cooperatewith an inclined projection 33 on the other slide 11, the parts 33 and34 being shown in Figure 17. On the breech block 22 there is a small,forwardly projecting tit 35. A shouldered, spring-pressed latch 36(Figures 14, 1 and 2) operates vertically in the top of the breech block22.

Referring to (Figures 3, 14, 1 and 5) the drawings show that a tubularguide 37 is carried by the frame 1, back toward the stock and 4) thatare carried by the of the gun, and in the guide, a slide 38 is mountedfor reciprocation, but against rotation. The slide 38 is advanced by aspring 41 in the guide 37, and the slide carries a hammer 39 providedwith a firing pin 40 (Figure 3), adapted to move through the breechblock 22. Therslide 38 has a depending fork 42, (Figures 5 and 1),provided with rearwardly and upwardly inclined wings 43, having theirinner edges spaced apart. The trigger 44 is fulcrumed on the frame 1 andis under the control of a safety catch 102 of any desired construction.rlfhe trigger spring is shown at 45. rThe trigger 44 has an arm 46 atits upper end, and at the rear end of the arm there is atransverse,`inclined head 47. Comparing Figures 1 and 3, it can be seenthat the head 43 will slide backwardly over the arm 46, tilting thetrigger 44, during the coching of the gun, the head 47 acting as a stopwhen the gun is cocked, as in Figure 3; but when the trigger 44 ispulled, the fork 42 moves forwardly, and the head 47 of the triggerpasses through it.

Lateral guides 48 (Figures 5 and 1) are mounted on the hammer 39, and inthe guides, spring-advanced latches 49 (Figures 5 and 4) are mounted toslide, transversely of the gun, the outer ends of the latches sliding inthe grooves 111. The frame of the gun has inwardly converging surfaces50, located at the rear ends of the grooves 111, as can be seen inFigure 4.

Regarding closes the fact that a lever 51, of angular form, swings in arecess 52 formed in the rear surface of the breech block 22, the fulcrum of the lever 51 being marked by the numeral 53. A spring 54 in thebreech block 22 tends to Swing the lever 51 crosswise of the gun, so asto dispose the upper end of the lever in the path of the hammer 40, thatis, between the hammer and the breech block 22.

The lever 51 may be given an inclined or' wedge-like surface 55 on itsinner edge at its upper end, to aid in guiding the lever between thebreech block 22 and the forward end of the hammer 39. The short arm 56of the lever 51 has an inclined end 57 (Figures 19 and 20) resting onone of the slides 11, as shown in Figure 6. In the upper edge of thisslide 11 there is forwardly inclined notch 58 (Figures 19, 2 and 16)which receives the inclined end 57 of the safety lever 51, at times. Aninclined rib 59 (Figures 19, 2O and 17) is secured to the inner surfaceof the said slide 11, in alignment with the forward edge of the notch58.

The action lock includes an angular lever 60, to be seen in Figures 18and 6, and this lever is fulcrumed at 61 on the breech block 22, toswing in a plane at right angles 'to the plane in which the lever 51swings. One arm of the lever 60 extends out through the side 'of theframe 1, and terminates in a button the action lock, Figure 6 dis#pression spring 64 levers 31 act 101. The lever 60 has a lowerprojection 62 and an upper projection 63. The lower projection 62 is inthe path of the slide 38, as F igures 1, 2, 3 and 14 will show. A com-(Figure 2) is interposed between the breech block 22 and the lower partof the lever 60, and tends to swing the lever 60 in Figure 6 so that theupper projection 63 rests against the rear side of the lever 51;although, in certain steps of the operation, the spring 64 swings thelever 60 until the projection 63 is in engagement with the inner edge ofthe lever 51, the lever 51 then being swung to the right from theposition of Figure 6, and out of the path of the upper end of the hammer39.

Referring to Figure 1, the forearm 8 and the barrel 5 are in the forwardposition, the latches on the slides 11 being' engaged in front of theprojection 16 on the barrel. Therefore, as the forearm 8 is slid back,the barrel 5 will be slid back also. As the slides 11 of Figure 17 moveback, the rear end of the shell-gripping lever 31 that is shownlowermost in Figure 15, moves into the depression -34 of the slide 11that is shown lowermost in Figure 17, under the action of thecorresponding' spring 32, and at the same time, the inclined projection33 on the slide 11 that is shown uppermost in Figure 17 moves back awayfrom the rear end of the shell-gripping lever 31 that is shown uppermostin Figure 15. As soon as the lowermost lever 31 of Figure 15 isretracted from the shell in the maga` zine 4, that shell moves backunder the action of the spring (not shown) in the magazine, and theforward end of the uppermost lever 31 of Figure 15 rides on the side ofthe shell that is being moved back, but when that shell is clear of theuppermost lever 31 of Figure 15, then the forward end of the said leverengages behind the shell next ahead, and holds it in position to bereleased from the rear end of the magazine 4. Stated in few words, thealternately, to hold succeeding shells in the rear end of the magazine4. rThe shell that has been carried back, as aforesaid, is supported onthe wings 24, which, at this time, are in the depending position ofFigures 7 and 1.

The short spiral ribs 26 on the shafts 23 are just inside the slides 11of Figure 17, and as the slides 11 move back, with the forearm 8 and thebarrel 5, the cam blocks 29 on the slides act on the spiral ribs 26 anddirect them into the cam notches 28 (Figures 17 and 2) of the slides 11,and as the slides move back, rotation is imparted to the shafts 23,through the instrumentalitv of the spiral ribs 26 and the cam notches28, and the wings are swung upwardly, the shell that is on the wingsbeing carried upwardly. As the shell is carried upwardly, it is engagedat its rear end by the latch 36 and the tit 35 of Figure 2,

and as the barrel 5 moves back to the position of Figure 3, the shell isreceived in the breech of the barrel, the ejecting spring of Figure 2being compressed, and the shell being in abutment with the breech block22.

As the slides 11 are carried back along with the forearm 8, a timearrives when, as shown in Figure 14, the latches 15 on the slides 11come into engagement with the cam 17 on the fra-me, the latches 15 beingswung downwardly, clear of the projection 16 on the barrel 5, as shownin Figure 3. This lets the forearm have a small amount of backwardmovement, independently of the barrel 5, the said independent movementbeing possible because the slots 14 of the forearm which receive thecrosspiece 12 (Figure 13), let the forearm move back from the positionof Figure 14 to the position of Figure 3. At the beginning of theindependent backward movement of the forearm 8, the lugs 18 (Figures 14and 19) on the locking plate 18 that slides crosswise of the barrel 5,in the frame-carried block 2, are just entering the inclined notches 21of the arms 11, as in Figure 14. The aforesaid independent backwardmovement of the forearm 8 causes the lugs 20 to rise in the notches 21of the slides 11, to the position of Figure 3, the locking plate 18being raised and being engaged in the seat 19 of the barrel 5, to holdthe barrel in retracted or firing position.

As the slides 11 igure 4) move back, they engage the latches 49 in theguides 48 on the hammer 39, the hammer and the slide 38 being carriedback to the position of Figure 3, and the spring 41 being compressed. Asthe slide 38 moves back, the back 42 (Figure 5) that is carried by theslide move back on opposite sides of the arm 46 on the trigger' 44, andfinally the wings 43 catch behind the head 47 on the arm 46 of thetrigger, and the piece is cocked, as in Figure 3.

Referring to Figure 4, it will be seen that as the hammer 39 is carriedback by the engagement between the slides 11 and the latches 49, a timecomes when the latches 49 are shoved inwardly by engagement with thecams 50 on the frame, at the rear ends of the grooves 111. The rear endsof the slides 11 then can move back beyond the latches 49, and when thehammer 39 moves forward, as the gun is fired, the outer ends of thelatches 49 slide on the inner surfaces of the arms 11.

Noting Figures 6 and 20, it will be seen that the inclined end 57 of theshort arm 56 of the angular lever 51 rests on the upper edge of one ofthe slides 11. The short arm 56 of the lever 51 is tilted up somewhat,and this disposes the inner part of the end 57 in the path of theinclined rib 59 (Figures 17, 2O and 19) on the said slide. When the saidslide moves backward, that is in the direction of the arrow A in Figure19, the rib 59 will coact with the end 57 of the short arm 56 of thelever 51, to tilt the lever in the direction of the arrow B in Figure 6,and cause blocks 29, whereupon the end 57 to enter the notch 58 in thesaid arm 1l. l/Vhen the lever 5l is tilted in the direction of the arrowB in Figure 6, the long arm of the lever is moved out of the path of 51the hammer 39, that is, from betw-een the hammer and the breechblock 22,and the gun can be discharged. When the lever 5l is swung in thedirection of the arrow B in Figure 6, the lever 60 swings on its fulcrum61, under the action of the spring 64, in a direction at right angles tothe plane in which the lever 5l swings, and the upper projection 63 ofthe lever 60 (Figures 18 and 6) engages the left hand edge of the longarm of the lever 5l in Figure 6, and the said long arm thus is held outof the path of the hammer 39, to permit the gun to be red. rFhe partsunder discussion function as an action lock, which prevents the gun frombeing opened until the hammer 39 is snapped down, or until the lever lOlis pressed forward, permitting the operator to open the gun by forwardpressure of the forearm 8. When the gun is fired, the slid-e 38 strikesthe lower projection 62 of the lever 60, and tilts the lever on itsfulcrum Gl, thereby withdrawing the upper projection 63 from engagementwith the lever 5l, and permitting the lever 5l to move in front ofthehammer 39, as sho-wn in Figure 6.

As the barrel 5 and the forearm 8 are slid forward to open the gun aftershooting, the ends of the short spiral ribs 26 on the shafts 23 ride inthe grooves 27 (Figure 16) on the outer sides of the slides 1l, and thewings 24 are held upturned, as in Figure 7. During this time, th-e shellis held back by the latch 36 of Figure l, and the barrel 5 is pulledclear of the shell. The shell then drops clear o-f the gun, through thebottom opening shown at 25. Toward the end of the foreward movement ofthe forearm y,8 and the slides 11, the spiral ribs 26 encounter the rearwalls of the notches 28 in the slides 2S, the shafts 23 are rotated todispose the wings 24 in the solid line position of Figures 7 and 2, toreceive a fresh shell from the magazine e, the ribs 26 then being on theinner sides of the arms l1 and in the path of the cam the cycle ofoperations hereinbefore described may be repeated.

`/Vhat is claimed is l. A pump gun comprising a frame, a barrel slidablein the frame, a locking member sli dable in the frame and engageablewith the barrel to hold the barrel in firing position when the barrel isslid rearwardly, a forearm slidable on the gun, a slide carried by theforearm, interengaging elements on the slide and on the locking member,said interengaging elements coming into engagement the forearm and theslide move rearwardly, thereby to move the locking member intoengagement with the barrel, and mechanism for connecting the forearm tothe barrel to carry the barrel rearwardly, said mechanism embodying alatch engageable with the barrel and movable with the slide, and amember on the frame wherewith the latch engages, to disengage the latchfrom the barrel, after the forearm has moved rearwardly a predeterminedamount, thereby giving the forearm a rearward movement independently ofthe barrel, said cooperating elements acting to engage the lockingmember with the barrel during the aforesaid independent movement.

2. A pump gun comprising a frame, a magazine carried by the frame,shell-holding levers fulcrumed on the frame at the rear of the magazine,spring means for actuating the levers to cause them to engage a shelland hold it in the rear end of the maga-Zine, a forearm mounted toreciprocate on the gun,

slides carried by the forearm, and means carried by the slides foractuating the levers alternately to withdraw them, one at a time, fromshell-holding position, the last speciied means embodying a depressionon one slide, into which a portion of one lever moves,

as the forearm moves forwardly, to permit another portion of thatlever-to be disengaged from the shell by the corresponding spring means,and an incline on the other slide, wherewith a portion of the otherlever engages, as the forearm moves forwardly, to tilt said other leverand disengage it from the shell, the incline moving clear of said otherlever, as the forearm moves backwardly, thereby permitting anotherportion of said other lever to ride on the side of the shell, under theaction of the corresponding spring means, and then engage a shell aheadin the magazine, as the forearm is moved rearwardly.

3. A pump gun comprising a frame having a cam, a hammer movable on theframe, means for advancing the hammer, a springactuated latch carried bythe hammer, a forearm slidable on the gun, a slide carried by theforearm, .the slide engaging vthe latch, to carry the hammer backwardlyand cock the gun, the latch engaging the cam, to disengage the latchfrom the slide and permit the hammer to move forwardly with respect tothe slide, and trigger means coacting with the hammer to hold the hammerreleasably in cocked position.

4. A pump gun comprising a ing a breech block, a hammer operatingthrough the breech block, a safety lever fulcrumed on the frame, springmeans for moving the safety lever to interpose it in the path of thehammer, a forearm mounted to reciprocate on the gun, a slide carried bythe forearm, and interengaging elements on the forearm and on the lever,coacting to swing the lever out of the path of the hammer, when theforearm is moved rearwardly.

5. A pump gun comprising a frame includframe including ing a breechblock, a hammer operating through the breech block, a safety leverfulcrumed on the frame, spring means for moving the safety lever tointerpose it in the path of the hammer, a forearm mounted to reciprocateon the gun, a slide carried by the forearm, and interengaging elementson the forearm and on the lever, coacting to swing the lever out of thepath of the hammer, when the forearm is moved rearwardly, saidinterengaging elements comprising relatively inclined parts on the leverand on the slide, the slide being provided with a notch into which therelatively inclined part of t-he lever moves, as the lever is tilted outof the path of the hammer.

6. A pump gun comprising a frame including a breech block, a hammeroperating through the breech block, a safety lever fulcrulned on theframe, spring means for moving the safety lever to interpose it in thepath of the hammer, a forearm mounted to reciprocate on the gun, a slidecarried by the forearm, interengaging elements on the forearm and on thelever, coacting to swing the lever out of the path of the hammer, whenthe forearm is moved rearwardly, a second lever fulcrumed on the frameand movable in a direction substantially at right angles to the plane inwhich the safety lever swings, the second lever being provided with aprojection which may be interposed in the path of the safety levers, tohold the safety lever out of the path of the hammer, spring means formoving the second lever to dispose the projection in the path of thesafety lever, and means for operating the second lever to disengageprojection from the safety lever.

7. A pump gun comprising al frame includa breech block, a hammeroperating through the breech block, a safety lever fulcrumed on theframe, spring means for moving the safety lever to interpose it in thepath of the hammer, a forearm mounted to reciprocate on the gun, a slidecarried by the forearm, interengaging elements on the forearm and on thelever, coacting to swing the lever out of the path of the hammer, whenthe forearm is moved rearwardly, a second lever fulcrumed on the frameand movable with respect to the safety lever, the second lever beingprovided with a projection which may be interposed in the path of thesafety lever, to hold the safety lever out of the path of the hammer,spring means for moving the second lever to dispose the projection inthe path of the safety lever, and means under the control of an operatorfor actuating' the second lever to disengage the projection from thesafety lever.

8. A pump gun comprising a frame including a breech block, a hammeroperating through the breech block, a safety lever fulcrumed on theframe, spring means for moving the safety lever to interpose it in thepath of the hammer, a forearm mounted to reciprocate on the gun, a slidecarried by the forearm, interengaging elements on the forearm and on thelever, coacting to swing the lever out of the path of the hammer, whenthe forearm is moved rearwardly, a second lever fulcrumed on the frameand movable with respect to the safety levers, the second lever beingprovided with a projection which may be interposed in the path of thesafety lever, to hold the safety lever out of the path of the hammer,spring means for moving the second lever to dispose the projection inthe path of the safety lever, the second lever extending into the pathof a part of the hammer, whereby when the hammer moves to shootingposition, the projection will be moved out of the path of the safetylever.

9. A pump gun having a slidable barrel, and provided in its lower edgewith an opening located below the barrel and in the lower edge of thegun, a forearm mounted to reciprocate on the gun, a slide having a.longitudinal groove in its outer surface, the slide being' carried bythe forearm and being provided in its lower edge with a cam notchinclined transversely of the length of the slide and located at the rearend of the groove, the slide being provided on its inner side with aninwardly extended cam block which is located at the forward end of thecam notch, the slope of the cam block being in the same direction as theinclination of the cam notch, a shaft journaled in the gun, a radialWing carried by the shaft and located adjacent to said opening, a spiralrib on the shaft, one end of the rib engaging the outer surface of theslide, within the groove, when the forearm and the slide are retracted,thereby to hold the wing upturned and in open position with respect tothe opening, the groove directing the rib into the cam notch, as theforearm and the slide are advanced, the rib entering the cam notch whenthe slide is further advanced, thereby to rotate the shaft and swing thewing to closed position with respect to the opening, the cam blockcooperating with the opposite end of the rib to direct the rib back intothe cam notch when rearward movement of the forearm and the slide takesplace, and means for placing a cartridge on the wing when the wing is inclosed position with respect to the opening, the wing raising thecartridge into the path of the barrel, as the wing moves from closed toopen position.

In testimony that I claim the foregoing as my own, I have hereto afIiXedmy signature.

JOHN J. HENRY.

